My son is at an out of state college and we send money to support him. Until recently, his only source of income was from gigs and he hasn't made enough to file taxes. Can I claim him as a dependent? He is only 20 years old.
Yes, a 20 year old full-time student can be claimed as a qualifying child dependent. Living away at school is a "temporary absence" so you can say he lived with you all year and claim him as a dependent. You are the one who can use the education credit on your own return, too.
You say he had income from "gigs"----do you mean he had self-employment income? If so, he needs to file a tax return if he earned even $400 and pay self-employment tax for Social Security and Medicare.
MY DEPENDENT HAD A JOB
If your dependent has a W-2 for his after-school job, summer job, etc. you do not include the information on your own return. You can still claim your child as a dependent on your own return. He/she can file his own return for a refund of some of his withheld wages from boxes 2 or 17 (he won’t get back anything for Social Security or Medicare), but MUST indicate on it that he can be claimed as a dependent on someone else’s return. (Supervise this closely or prepare it for him!)
If your dependent’s earnings were over $400 and were reported on a 1099Misc or 1099NEC then he must file a return and pay self-employment tax for Social Security and Medicare.
You might also want to use free software from the IRS Free File versions:
https://apps.irs.gov/app/freeFile/
https://ttlc.intuit.com/community/self-employed/help/what-is-the-self-employment-tax/00/25922
Yes, you can claim your son as a dependent provided he meets the rules below.
See the TurboTax article Rules for Claiming Dependents on Taxes